Edward kaylor



' thereof', iefernce being had tothe accompanying invention, the natureof which consists in operating adrop'hannner` bypinsl or projectionsattachedA to ie pins shall pass on bothsides of it, the object being tosuitable foundation.

. and down, lbeing raised, with `the hammer, as hereinafter to b'e descandg, rests 'a lhoxizontal shaft, h,"at any 'coni'enient tioned,and-far. enough distant to allowthepins 0.o to

-lar disk,-l, of a diameter' equal tog. or; a little i'n excess shaft-r,com'monly at right angles thereto, parallel vto` circle described bythe, revolution of the-pillado', and

' hat ma cisti lim EDWARD KAYLOR, Y0F P i'rrs'nURG, PENNSYLVANIA.'

.Letters .Patent No.V 95,693, datcfl -0ctobe-r112, 1869.

To allwhcm it may concern.- .s -Be it known that 1, EnwAnnKA'rLoi, of,`Pittsburg, in the countyofAlleghe'ny, and State ot' Penn- Sylvania, haveinvented a-new and'useiul Improvement in Drop-Hammersaand I dohcrebyd'eclare the following to .be a. full, clear, and exactdescription drawing, making a part of fthis specification, which gives aperspective view Aofthe devices included in myvolving arms,- oijvtotheface of 'a' revolving disk,- the centre around which the' pins revolvebeing so situate,"- relatively to the veitical hammer-shaft, as that thegive a longer stroke, to the hammer thanis `produced by litters ofordinary construction..

To enable othersskilled in the art to-make. and usel tion and modeofoperation. 'lhe anvila rests on a bed, b, r other convenient or.

With the construction shown inthe .drawings,the` posts c and'c standupright, one on each side of the anvil a, andare connected by cross-barsd and d, two or more. y v Through holes or slots in thesecross-bars dd', the vertical drop-shaft e, of vthe drop-hammer z, plays up ribed,and falling under theintluence of gravity.

Back of the devices thus described are the braces ff, dce., meeting atthe top, or connected by caps g.

0h these caps, and enclosed in proper hearings, g

point, on which is attacheda gear or pn'l'ley-wheeL', through whichlatter, in any of the ordinarymodes, the poweris applied, requisite toraise the drop-hamticai shaft e, of v the droprhammer. z, andsutlciently near it to accomplish the purposes hereinafter men' passback of the drop-shaft e, I attach firmly a circuof the" lii't which itis desirable togive the. drop-hamlne'r Z. A

At opposite points, near the V.circmiller-ence -ofthe .diskl, l.construct projections, or attach pins, o o', of s'uflicient length,that-as they revolve with' the diskl and shaft lr, they .willplayagainstthey under side of' a bracket, 1n, which is attached to thevertical dropthe face ofthe ,disk Z, and projeet-ing f`1'on1 the shaft ea distance equal or nearly equal to the radins; of the with as inside'or' 'back tag respond.

of the disktobe caught by thev pins o` o',

- The mode of operation, fthen, is simple.

By applying "the power in the manner above des scribed, the disk lisputinrevolution. VAs it revolves;

onepin, o, plays against the uuderl'ace of' thev bracket m, raises it,with the vertical shaft, to which itis at` tached, and the drop-hammers,to the position indicated by the' dotted lines, sliding, at the'sainetime, outward toward its point, and backward toward itsl heel, where vit slips out', and 'thef drop-hammer falls. .-'lhe other pin, o', thenraises andrreleases'it in the same manner, and so on, alternately.

A'.lhe bracket m maybe made adjustable on the v ertical drop-`shat`t e,by the pin n or otherwise, and should generally be so adjusted that theplan-'which theverl tieal shaft and dropfhammer a receive, shall besomewhat less thlythe distende of the pins-cando' from each other, inl.order-that the drop-hammer z may make a complete stroke. To preventtheshaftefrom revolving on its axis, I commonly make its upper ond ofother than circular shape, and make the hole in the, cross-bar d', throuI do not, in my invention', limit Vmyself Itothe use' Y of anyparticular fom of the disklfnor, indeed, t'othe use of the disk itself,sincel revolving arms, projecting outward in'opposite directions fromthe head of the horizontal` shaft h, with 'the pins o and o' attachedthereto, in the manner above described, would be equally ecacious. Nordo I limit myself `toany particular number of pins o o. If but one isused,'the drop-hammer z may have a fall-equal `to the diameter' of thecircle made by the revolution'oi such pin. It' more than two are used,the bracket m must be raised, or the disk l he enlarged, so that thevdrop-hammer z may make acomplete stroke when dropped from one pin, o,before being caught by the next, o.

.The advantages of the devices above described-conf.

4sisnameng other things, in simplicity of construction, -ease 'andaulacy of operation, and a comparative freedom from liability'to get outof order. I claim them, also, asan improved inode ot' applying powerover any mode heretofore us or tilt, or trip-hammers.

The motion commonly lost during thevf'all of the hammer, is,-inmyinvention, reduced to the minimum,

ed in connect-ion'with drop,

.since I'commonly adjust the bracket m with reference to the otherdevices, so that as soon as the drop-hammer z com pletes one downwardstroke, it will he again and immediately raised foranother stroke by oneof.; the 'pinso o. 'Thus the loss of motionishut slight,

and such motion .as is lost, is lost when of' least prac- Y ticalvalue,namely,whilc the lower .ofthe pinso 0'y is moving across thedirection of the fall of the-.ham-v m'er, and-not-'in ajll'in' with it.I hence claim that e f'silf'l'ciently near the face the amount of motionwhich is necessarily lost is, in the devices above described, reduced tothe minimum, both in the time during which the machinery is operatinguselessly, and inthe fat that duringthe time of the loss, it isworking'at a pointuwhere, `and. in a direction in which the motion is oflittle avail in raising the drop- .hammen j y I claim the furtheradvantage of securing ai quick percussive stroke, by a hammer fallingperpendicularly from the greatest height to which it can be raised by agiven amount of motion-all which things are essential in drop-hammersfor certain purposes, particularly in making bolt-heads, and othersimilar articles.

I also commonly place the'vertical shaftein the line o1utionand therebygive to the drop-hammer h a fall from as great aheight as possible; 1With the cam and o bracket-devices ordinarily used for operatingdrop-hams mers, the lifting-power commonly acts-entirely on one. side ofthe vertical shaft to be raised, instead of pass ing-from side to sideby arotary movement, as invmyV invention,'a consequence of which-isthat-,the hammer and its shaft are, inlsuch machines, droppedbefore thelifting-power has reachedrits highest poiut,-a;n d

hence the power, at the point where it Ais, greatest, is v Wholly lost.;v A In my invention, as'ahove. desoribedfthelastpart of the lift,namely, that madeby theipins o o', when half" of thatv stroke is aiithatis `attainable i dinary'cam and bracket movement: ofthe horizontal shafth, or. near thereto, in order that the pins o o may carry the bracketfm, and the devices- Y connected therewith, to the highestpoint oftheirl revnearly or directly over their axis of revolution, is a clear-g'ain o r saving of so muchj power, `with a consequent andcorresponding-increase in the effectiveness of `the itrokl of theVdrop-hammerwhen thus raised and reease y before stated, the. height ofliftorjstroke of the hammer-shaft may be adjusted byalterng the posi#tion .ofthe bracket m on the drop-shalt e; vbut the pe' y cularadvantage "of my arrangement is that'thedfropshaft may be raised at eachstroketo aheight nearly,

if not quite equal to the diameter. ofthe disk, or dis` tance of thepins o of from each other, Whereas, oneand desire to secure ecting froma revolving disk or arms, on the end o a horizontal shaft, h, in

combination with a vertical drop-shaft, e, and its bracket, m, soarranged that the pin `or pins, in revolving -to raise the drop-shaft',shall operate during one-half of its revolution, substantially as andfbr the purposes hereinbefore described. r

I n testimony whereof', I, the-said EUWAR'KAY- son, haveiherunto setm'-hand, in presence `of A 'EDWARD 'IL'.XYLOR.`

Witnesses:

' W.' D. LEWIS, ALLAN '0. BAimwzeLL.

bythe or-

